-39.16% is the change from 812 to 494
Calculation steps:
[( 494 - 812 ) ÷ 812] x 100 = -39.16%
Formula
Percentage change = [(494 - 812) / 812] x 100
Subtract the new number by the original number
494 - 812 = -318
-318 ÷ 812 = -0.3916256157635468
-0.3916256157635468 x 100 = -39.16%